Using default settings and the default get to the river level, I don't see any real difference between the last beta and this one. Much the same for me using defaults. I get an immediate fps warning when the level fist loads with my fps at 11fps (lower than Beta 2) then accepting auto optimisation and everything set at off except the veg which it leaves on I then get 24fps - all just about the same as Beta 2.
I can improve this by using all the various sliders to remove detail but then that's little advantage to the visuals as we are swapping loss of quality for a few more fps - but can boost fps up to a max of around 28 fps - 32/34 fps fluctuating. By manually turning reflections to 1, veg and LOD and so on to as low detail and as little veg as possible I can perhaps keep and average of around 29/31 fps. Seems the veg is the biggest hog.
I can actually live with 31 fps if I could keep that in complex levels at least that's playable. I don't need a lot of the eye candy like bloom which I don't need at all. Some water reflection and a little more veg on screen would be good.
Little or no difference to Beta 2 at the same quality level. i.e keeping some reasonable veg cover level. At least the updated slider controls do now allow a little boost which does help albeit at the expense of visual quality. At the end of the day if its a necessary evil trade off as one can live without visuals but not without acceptable performance and fps then so be it but its not a trade off that is really needed to the extent that levels are visually underpopulated or under detailed at the quality of engine looked for here. As the saying went I got better fps by turning everything off is not the ideal situation but better than no option at all if games are to be performance playable.
In an empty level (and no veg) I can get better fps than Beta 2 with this version showing around 44fps but that's with all the sliders and everything turned down to fully optimised except shadows which I keep set at 1 so they actually work/display correctly (ish)
All in all this is an improvement in as much as it provides that optional trade off of loss of quality for an improved fps which is not an option at all for many but a necessity. Can't play games if the fps is too low.
Personally I would rather this than Beta 2 as at least it does provide users with that option. Ideally we need more of the performance improvements so we can maintain playable fps and get back some more detail or add more content to levels or both if possible.
There are some other improvements and or fixes I can see that have been done and thanks for those. Thankfully to date I have not really seen any stability issues and don't get any crashes or anything like that and hopefully that stability can be maintained. Its great to work with something that does not keep falling over shutting you down (quit) too often.
Please keep up the good work.