I'm not sure if this is related to all the other issues with the new dice roller, so I decided I'm going to make a new thread to try to keep this potential issue separate.
I'm a player in a party, and I've noticed that for our past two sessions (seemingly correlated with the rollout of the new digital dice roller), I've had major issues with Firefox 148 and Firefox 149 on Ubuntu 25.10, Gnome on Wayland. Even with a fresh Firefox session, just opening DND Beyond's character sheet and the VTT seems to cause Firefox to use up all my CPU. Looking at it in top, it seems to use 800% CPU (100% of each of my 8 CPU cores...)
To make it even worse, even closing all Firefox windows does not seem to get rid of the process running at 800% CPU, so unless you find it and kill it (or reboot your system) it stays there eating all my CPU.
I am tempted to say this is actually *not* a DND Beyond bug though, even if perhaps changes to DND Beyond might have triggered it, because no web app should ever be allowed by the browser to keep eating all my CPU cores even after closing the window. Anyway, it seems to be fixed in the Firefox 150 nightlies
I have Firefox installed through snap (the default on Ubuntu) so for me, fixing it was as simple as changing the release channel from latest/stable (148.0-1 at time of writing) to latest/edge (150.0a1 at time of writing). I wouldn't recommend to anyone to run a pre-release development version of your web browser, though, but if what I just said made any sense to you, you probably can figure out how to install it. :-) And if not, at least give you some hope this problem is just going to go away with time.
Until this fix goes into main line Firefox (and I have no idea what the problem is, just that 148 and 149 has the problem, and 150 doesn't) I'd suggest staying away from Firefox on DND Beyond and going with a different browser, such as Edge or Chrome. (And also keep an eye for any stray Firefox processes eating all your CPU...)
I also noticed other party members having issues with Firefox, and they just switched to Edge to make the session work. I think my other party members are all running Windows, so while I don't know if they're running into this exact same issue, I think there's an issue with current versions of Firefox on DND Beyond on alternative operating systems to Linux as well. Understandably, I didn't take the time to make them switch to the latest Firefox nightly, after all there was actual fun to be had.
Hopefully this thread helps someone figure something out :-)
I'm not sure if this is related to all the other issues with the new dice roller, so I decided I'm going to make a new thread to try to keep this potential issue separate.
I'm a player in a party, and I've noticed that for our past two sessions (seemingly correlated with the rollout of the new digital dice roller), I've had major issues with Firefox 148 and Firefox 149 on Ubuntu 25.10, Gnome on Wayland. Even with a fresh Firefox session, just opening DND Beyond's character sheet and the VTT seems to cause Firefox to use up all my CPU. Looking at it in top, it seems to use 800% CPU (100% of each of my 8 CPU cores...)
To make it even worse, even closing all Firefox windows does not seem to get rid of the process running at 800% CPU, so unless you find it and kill it (or reboot your system) it stays there eating all my CPU.
I am tempted to say this is actually *not* a DND Beyond bug though, even if perhaps changes to DND Beyond might have triggered it, because no web app should ever be allowed by the browser to keep eating all my CPU cores even after closing the window. Anyway, it seems to be fixed in the Firefox 150 nightlies
I have Firefox installed through snap (the default on Ubuntu) so for me, fixing it was as simple as changing the release channel from latest/stable (148.0-1 at time of writing) to latest/edge (150.0a1 at time of writing). I wouldn't recommend to anyone to run a pre-release development version of your web browser, though, but if what I just said made any sense to you, you probably can figure out how to install it. :-) And if not, at least give you some hope this problem is just going to go away with time.
Until this fix goes into main line Firefox (and I have no idea what the problem is, just that 148 and 149 has the problem, and 150 doesn't) I'd suggest staying away from Firefox on DND Beyond and going with a different browser, such as Edge or Chrome. (And also keep an eye for any stray Firefox processes eating all your CPU...)
I also noticed other party members having issues with Firefox, and they just switched to Edge to make the session work. I think my other party members are all running Windows, so while I don't know if they're running into this exact same issue, I think there's an issue with current versions of Firefox on DND Beyond on alternative operating systems to Linux as well. Understandably, I didn't take the time to make them switch to the latest Firefox nightly, after all there was actual fun to be had.
Hopefully this thread helps someone figure something out :-)