@trinsec Interesting... I'm using Vivaldi and minecraft at same time, seems fine to me. Tried official launcher and Prism launcher.
For memory issues, you may try to adjust how many ram the minecraft's jvm should use. Someone suggest not bigger than 4G to save time on GC, but I find out 8G is fine, and 16GB is better (if you have a lot of mods)
@trinsec
The simplest solution: add more memory 😋
@skyblond I doubled it. 😋
@skyblond I use 8gig by default. Works fine. It's just that my pagefile was too small.