Fan lights switching off/bugging out under high system load

Hi. So I've got all my fans up and running great but I've noticed when under very high load some of the lights will switch off and the profile colors will stutter or freeze. They seem to return to normal after the system cools down. I thought that maybe it was a power supply problem so I upgraded from 650W to 750W but it's the same thing happening. Why?

 

I'm running ryzen 2600x Asus Strix 2080 Ti OC oc'd, 32 GB ddr4 ram on a msi b450 tomahawk. I also have 2 pci usb cards and a 4 port powered hub totalling 11 extra usb ports.

 

My fan configuration is as follows from 1 to 6 on the lighting pro: 1.ML140 rgb 2.ML140 rgb (on top) 3.LL120 rgb (on rear) 4.LL120 rgb on front bottom 5.ML120 rgb and 6. ML120 rgb on bottom. I've got them all set up as 5 lighting strips in the icue software and I don't use the last 2 lights as there's only 48 total. On the second lighting node channel i have 4 lighting strips.

 

I have a few various cycling profiles on the fans, with a select 4 lights on the top displaying gpu and cpu temps. The lighting strips are set as temperature for the gpu.

 

Any ideas????

 

Second pic is glitching when hot.

Edited October 28, 2019 by Pitufo
Adding pic

Is it when hot or when it's under heavy load? Certainly - heavy load increases the CPU temperature.

Well, both... It's only hot under heavy load. Happens every time.

Well, after you reduce the load, it still has some heat, right?

Here's the thing - if you are running the CPU full bore at 100% utilization across all cores ... well, iCUE uses CPU time to create your effects. If there aren't many time slices to go around, it'll have a hard time doing that. Now, Corsair could, potentially, boost the priority of the threads that are doing the work of the effects, but then that'd take time slices away from the work that you are actually doing.