Terraform cause HUGE lag spikes

I have noticed that in my recent games (mostly FFAs) the performance was mostly good except huge 20-40 seconds lag spikes occasionally happening.

They seem to happen in two situations:
1. When I terraform something
2. When I send scout planes across the map.

Upon observing one of my scout planes I discovered that the lag spike happens exactly when the plane starts discovering enemy terraform, which was previously not visible.

It seems there is huge performance bottleneck either in engine-side Unsynced Heightmap or in ZK-side Terraform Texture.

Did any of you guys have similar experiences with terraform causing huge lag spikes even without units trying to path throught it?
Is there any way to disable Terraform Texture client-side or anything else in the settings to improve performance when stuff gets terraformed?

@Rafal[0K]
Maybe its NOT terraform-texture(?) because it might related to pathfinding too. For example: if you turn on QTPFS and terraform the ground while there's alot of unit moving then you'll get a consistent lag spike in 94.1

I think Spring 94.1 itself is performance bugged, we must move on to NEXT version soon, we can't stay here!

quote: When I send scout planes across the map.

This is overkill lag for me. Other than that I can play rather smooth.

Zenith and Clogger are now best units to make lag for everyone.

GoogleFrog:

quote: No xponen, the terraform gadget is a bit slow when changes to texture are discovered.

That "a bit slow" is 20 seconds of solid freeze every time when you discover any sizable enemy terraform...

Is it same slow in 94.1.1-95?

I need someone who has this problem in a really noticable way to test the latest version. I think the texture drawer should be a lot faster because I removed a lot of gl.Texture calls. The problem isn't severe for me so it would be good for other people to do some comparative tests with the latest version.

There is also sudden lag spike sometimes while you are building terraform yourself. Frequently you are the only one lagging at that moment.

Will the lag-spike still happen if one activate VSYNC? If VSYNC can fix the lag-spike then the fix will be as easy as tweaking the update rate of the gadget.

If this is true then we can fix ASAP.

The terraform texture gadget appear to update at rate as fast as the game's FPS, but when you activate the VSYNC it will limit the game FPS to 60fps so this should also limit the update rate of the terraform texture gadget to 60 times per second.

I'm just guessing the cause of the lag, but if VSYNC can cure the lag-spike then the solution for Dev is to simply throttle down the update rate of the gadget and you can turn OFF your VSYNC afterward.

If this fail then it only eliminate the update rate as the possible cause of the lag-spike but the search will continue...