58 minutes ago, IanHarrison said:

Thanks. 

However my first attempt at those settings is a fail P3D doesn't even open.

Will try again later.

I would try a frame limit first.   ( again a setting in P3D of unlimited )

return the scanline sync back to :-     ' Scanline Sync    0 '           ( ie switching scanline off  )

then enter a frame limit :-                   ' Frame Limit       30'           ( a value of 0 switches frame limit off )

Have you added Prepar3D.exe in the pane on the left and clicked on it.

These setting are for a 60Hz monitor

regards  bob

Edited June 14, 20196 yr by onebob

Limiting frames, whether in sim, or externally, to something that isn't a multiple of your refresh rate, is going to induce stutters.

If you have a 60hz monitor and aren't limiting it to 30, 20, or 15, then you might as well not use any frame limiting at all.

Even if you can only hit 26fps limiting to 30 will give you a better experience, you'll be getting the same/less stutters but higher average framerates. You'll be getting steady stutters 2-3 times a second by locking to 26.

Edited June 14, 20196 yr by itsjase

That "not loading" was obviously a glitch, as now all is well.

Now have no fps limit in RTSS, 1/2 scanline with -1, and unlimited in P3D, with P3 running as a profile.

Did a torture test. PMDG 747 at EGLL with EF and AS and Orbx TE. On ground Fps varying 13-25, in air 12-20.

As to be expected some minor stutters but overall very acceptable .

Will just try that with limited FPS at 30.

Then I will leave well alone.

Thanks for the assistance.

 

On 5/18/2019 at 11:11 AM, Nyxx said:

The problem is the second I open a 2D pop-up ND/PFD FPS drop from 26 to 13...half! is there a way in RTSS to stop this?

There is a problem when using ext FPS limiter and more then one display. Search for "Undocking panels halves the framerate" or something simmilar. You will find some topics which all ended up to dropping the external FPS limiter ONLY IF YOU PLAN TO UNDOCK PANELS.

I can't recall why it happens and I think there was also some mention towards P3D running windowed or something....just serach for it (Google) and you will find your answer.

EDITED: Look at the last post for a possible fix..: https://prepar3d.com/forum/viewtopic.php?t=119732

Edited June 14, 20196 yr by GEKtheReaper

46 minutes ago, IanHarrison said:

1/2 scanline with -1

This value positions the scanline on the monitor, I think it puts it below the bottom or above the top. other values ( 1or higher )work but you may see tearing.

Entering a value of 0 will switch scanline off.

I use this value as it was suggested on the Guru3d forum.

 

regards  bob

Edited June 14, 20196 yr by onebob

Thanks Onebob, or should you now be modernised to 5p?