Since I bought Steve's DX10 Fixer, I had only problems with it, in both DX modes. First time I tried it, I was on a heavily addon loaded FSX installation, which by the way worked flawlessly, amazingly smooth framerate in DX9, no stutters, it was a dream. Then I bought FX10 Fixer, because I knew that I can get better performance in DX10 when memory usage is high (on approaches). Played with it couple of days, and I've got awful performance in dx10. Converted effect files, enabled compatible reflections... it was even worse. Switched back to DX9, and then the performance with the libraries enabled or disabled was awful, not smooth at all, lot of stutters, lower fps. So my first experience with the Fixer was not good at all, it ruined both DX10 and DX9. So few days later after lot of fiddling with FSX files (performance benefit) I accidentally deleted one important file and FSX refused to start. So, it was the time for first full reinstall.

I deleted FSX and  reinstalled two days ago. Checked performance without Acceleration, about ~40fps. After Acceleration in few tweaks in fsx.cfg (wideview and highmemfix), fps was ~100. So with that virgin installation of FSX, I installed DX10 Fixer libraries, and checked the performance. FPS was ~80 (20% lower), but it was smoother a bit all around, so I continued to play with it. Installed FSXG, SceneryTech landclass, and checked the performance. It was about 70-80fps. Not bad at all. Then after numerous effect converting in the Fixer, suddenly the sim started to act strange. FPS dropped to 60, and when flying to 30-40, insted of 60-70 before all the converting and stuff. Then I switched back to DX9 to check what's wrong with the sim, is the Fixer's fault or what? DX9 acted even worse that DX10. I really have no clue what is happening. So my guess is that converting effects in the DX10 Fixer caused this. I had only A2A C172 installed, and the performance was much worse than few days ago with the addon loaded DX9 installation. So just for the test I installed A2A C172 again to overwrite converted effects from the Fixer, and the FPS was slightly better, from 40 to 45fps. Again, I pointed my finger at the converted effects, not good.

So I ditched FSX installation AGAIN, unistalled, deleted, and reinstalled. Checked the performance again with virgin setups, without and with Acceleration, FTXG. So far so good in DX9, veeeery smoooth FPS, no stutters. 60-70fps when fying in default C172. One difference, I will NOT touch DX10 Fixer this time around, I strongly believe it will ruin my performance again. Or, I can play safe and install the libraries, but leave the effects unconverted, and compatible reflection disabled. I will see. So far, I have no patience to play with it anymore.

 

To be honest, performance in DX10 is smoother, and chance for OOM's is much smaller. Even with 20-30fps everything seems much smoother, in default planes. If I load A2A C172 or CLS MD-80, performance is awful, lot of stutters. I thought that planes are not the best choice for DX10 mode, with my CPU and GPU, I don't know anymore. Performance in DX9 with both of mentioned payware planes is superb, especially with CLS md-80, smooth like silk, 55-60fps sitting on default EDDM even with the AI packed airport (MyTraffic @ 40%).

 

So, my experience is not good at all with the DX10 Fixer, and I will not ask for a refund or support, because I simply believe it is due to my hardware or numerous effect converting and switching to DX10, and back to DX9 few times. Also I want to upgrade my hardware completely in the next year, so the Fixer will be the first thing to try then.

 

I was on a No Man's Land for 3 days, and I had enough. I'm sticking to DX9 this time.

 

Your experience with effect converting and compatible reflections enabled?

I have switched back to DX9 mode recently, and now I am getting heavy stutters at major airports. I did not experience this previously (apart from Gatwick Xtreme and Heathrow Xtreme at MAXIMUM detail levels and AI traffic), so I am puzzled why it has happened. The problem is also present in DX10 mode if I attempt to switch back.

 

Of course, I can't say conclusively that this has been caused by the DX10 Fixer, but I would really like to know if there is a solution to my problem. What would be the main cause of stuttering under heavy load?