Timelock Studio and Croteam have released the first post-launch update for Serious Sam Siberian Mayhem. According to the teams, Update 1.01 fixes a bug that was causing regular micro-stutters on some machines.
After testing this patch, we can confirm that the game has fewer micro-stutters than before. It’s not 100% silky smooth and there are still some very minor stutters when panning the camera. There are also stutters when the game loads new enemies. Still, things are significantly better than before.
Alongside this fix, Patch 1.01 optimizes destructions (gibs) on certain enemies. It also resolves the soft lock in the final battle of the fourth level.
As always, Steam will download this update the next time you launch its client. Below you can also find its complete changelog. Lastly, our PC Performance Analysis for this game will go live this weekend.
Serious Sam Siberian Mayhem Patch 1.01 Release Notes
- Fixed a bug that was causing regular micro-stutters on some machines.
- Fixed a bug that was causing Combat Drones to fly erratically and get stuck on geometry.
- Optimized destructions (gibs) on certain enemies.
- Optimized Octanian’s rifle model.
- Fixed a bug that caused new player models’ names to display incorrectly in the player model selection menu in some languages.
- The “Healing Punch” skill healing amount has been manually adjusted for certain enemies.
- Fixed the soft lock in the final battle of the fourth level (Roadside Picnic).
- Fixed a number of other possible soft lock opportunities.
- Various localization fixes across the board.

John is the founder and Editor in Chief at DSOGaming. He is a PC gaming fan and highly supports the modding and indie communities. Before creating DSOGaming, John worked on numerous gaming websites. While he is a die-hard PC gamer, his gaming roots can be found on consoles. John loved – and still does – the 16-bit consoles, and considers SNES to be one of the best consoles. Still, the PC platform won him over consoles. That was mainly due to 3DFX and its iconic dedicated 3D accelerator graphics card, Voodoo 2. John has also written a higher degree thesis on the “The Evolution of PC graphics cards.”
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They need to fix the save issues then ill wishlist it
When SS4 fixed for the same issue?
never
Microstutter isnt a bug anymore, its a feature. If you dont ignore then you will not play pc games.
Still waiting for deathloop update, game dont even use half of my gpu
SS4 never had it to this level. In SM it was constant, even if standing still.
Ironic that this would happen in a Croteam game. They pioneered analysis of reasons why microstutter happens in PC games a decade ago and yet now they release a game with worse stuttering issues than other devs out there. Tells you everything you need to know about this project. This is the B team, the interns, or everybody competent left the company.
I feel like most competent people left AAA studios as it seems lately. Not like Croteam is a AAA studio tho.
While stuttering was indeed fixed, the absolutely horrible CPU bottleneck was not. I am unable to achieve above 80% GPU usage and in open areas its stays in low 60s. It’s ridiculous that my Ryzen 5 5600X and GeForce RTX 3070 Ti are unable to push stable 144 FPS at 1440p.
Can you achieve that in other relatively recent games?
Yes.