I googled "komodo slow performance" and got this page.
CPU utilization eventually climbs above 100% when the IDE is sitting idle.
Komodo IDE, version 11.1.0, build 91033, platform macosx.
Built on Wed May 30 10:04:57 2018.
MacBook Pro (2017)
Processor 3.1 GHz Intel Core i7
Memory 16 GB 2133 MHz LPDDR3
Hell, even when it's freshly open and sitting there with no documents open, it sits at approx 8% utilization.