Server Lag, timing Minecraft::Bukkit Scheduler SELF

I have tps problem on my server.
Timing result only show that Minecraft::Bukkit Scheduler SELF is high.
Can someone tel me if its normal or what doing next to reduce that.

Could you login on the server and send a timings report with active players? I dont think its causing any lag at all but i cannot see the tps.

Also would recommend removing the plugin laggremover.

Without plugin laggremover and active player

Without itemjoin plugin

Looks fine to me, you can optimize all the yml files to ensure it works even faster but doesnt look like a problem.

Ok ty