Frame time issues on headless server

[hgwaz]

I've been playing with a friend on a multiplayer server and performance has been very good overall. Over the last week our server host had issues updating to .47 and my friend wanted to take a break, so I continued offline.

When I load this save up in multiplayer now however I get terrible performance, especially when moving the camera. Doesn't matter if I'm running around or moving the camera in remote view. It happens on every surface. The frame time graph ends up looking like this and it feels awful to play.

frametime graph.png (167.88 KiB) Viewed 81 times

There is no issue whatsoever in single player. There is also no issue when loading the old save (50 hours ago, from when the server still worked in .43). Server RAM and CPU load are at ~50%.

Here is my show-time-usage when in that multiplayer game.

show time server.jpeg (781.26 KiB) Viewed 81 times

Here is the file in single player

show time SP.jpeg (767.59 KiB) Viewed 81 times

Here is the old file which is fine, in case that's of any use

show time old save.jpeg (758.58 KiB) Viewed 81 times

Here's the multiplayer statistics menu

mp stats.PNG (27.93 KiB) Viewed 81 times

Any help in figuring this out would be greatly appreciated. I don't think I can do the last 50 hours all over again.

Edit: attached the current and previous save files