Graphics pauses on Ubuntu Intel Integrated Graphics

[yesimon]

System:
Ubuntu 16.04 64-bit
i5-4690k
16 GiB
750 Ti
Factorio 13.20
nvidia drivers

I recently tried running Factorio on integrated graphics instead of my nvidia card and have been getting multi-second graphics render stops every few seconds (happens more often if zoomed out). However I am still moving and seems like the game engine is still going. Checking FPS I am mostly getting 55+ with some drops to 40ish+. I have edited the bios to give Intel graphics 1024Mb ram. This occurs even with no mods on a newly generated map.

This is pretty strange because I can definitely play on my Macbook Air 13" with much worse specs just fine. Also using the 750Ti works just fine. Is there any way to further debug this?

[bk5115545]

Does it only affect Factorio?

[yesimon]

Yes, I tried Civ5, which even though I get FPS in the mid 20s, I don't get any multi-second pauses.