Fortnite '' Mini Ruckler / Stuttering ''?

I just wanted to ask here, because I do not know anymore.

I have an i7 8700k, GTX 1080 TI and 32GB DDR4 RAM 2666 MHz. In addition an Acer Predator with 165HZ and G Sync. Now to my question. I have ingame stable 165 fps and 20ms ping. The game itself is great, but I have in between such micro laggs / stuttering which is really annoying. Above all, I notice the spectaten / on. As if the SSD or the RAM somehow did not come from behind… Both should be more than sufficient. RAM are nonames.

These micro laggs are also constant. Who has an idea?

Maybe your Internet sometimes has short stutters or the power supply (from the power adapter or the power outlet) is not always sufficient