Floatplane signin page pegging CPU

[Bob Wilson]

So this is very weird behaviour, not sure whether anyone else has experienced this or its just me.

 

I have a Dell XPS 15 9560 with an i7-7700HQ, 16GB, with a GTX 1080 running in an Akitio Node eGPU enclosure. Running Ubuntu 18.04 with Firefox 77 as the primary browser. I have two screens, the 4K laptop screen and a 34" LG 1080p ultrawide . The ultrawide is the main screen, the laptop sits off to the side. I usually have some sort of content (YT/FP/Twitch) running on the laptop screen whilst I'm working.

 

I've noticed that if I have the Floatplane signin page up on the laptop screen, it makes the system crawl, pegging one of the CPU cores to 100% and generally making the entire system unresponsive. If I then move the browser window to the 1080p screen, the behaviour stops. Very bizarre, took me a while to figure out what was causing the issue. This is the only page that I've noticed it happens on.

 

Wondering if anyone has any idea of why this might be happening, for that particular page on that particular monitor.