Hey Jartexis!!
Well there are many good applications for recording but most of them require a high ammount of ram from your pc and that was my problem too tbh, probably reducing the quality would solve the issue a lot but make sure its not too pixelated so the staff member that is reviewing your report is abble to understand what official rule the rule breaker is breaking. You can try using the following recording apps:
- OBS ( not recomended for people with low ram )
- x box bar [press windows key + g for more info] ( it is acceptable for people with low ram )
- FBX ( acceptable but didnt use that much )
In case you want you can just simply report them by contacting a staff that is online ( use /staff command ) and tell them the issue.
Hope this helps you!