some stuff i read in the devs ci-en sites about possibility of future content,
-more bugfixes is coming,
-new character might be added (but its currently the lowest priority for the devs),
-gallery mode (already in the work, but might not be ready yet in the next update),
-new NTR content (new implementation of drone view when the girls have been corrupted to less than 100 heart point, where the natives can have sex with the girls even after that to even lower their heart point),
-girls that have been corrupted might join the natives when they hard r worded the other girls, performing new sex scene of threesomes and such. but its still unknown if the devs will go with this or not, due to it being quite hard to code in open world like these. they have planned to do it, but whether it will work or not will depend on the coding and animator team.
-the Girls might have a different design later on when they get fully corrupted or reaching a certain heart point when having sex with the natives.
-new command to gather meat/resources, etc., might be implemented by the devs if given enough time, its not the highest priority right now. The plan is to give the girls something to do outside of your normal group and some event might trigger with that (kidnapped by natives, hard r'd by the natives, etc.). the dev also plan to put a distress signal of when the last time the girls was detected and you can find clues such as shoes and cloth pieces in the areas.
-new native behavior (might be added later) to prioritize mating than knocking down the girls.
-the girls might have some speech bubbles in the future, it'll depend on if the devs have times or not to implement them.
-new ideas in implementing bad ending or failing the last mission is being discussed by the devs right now, but whether they'll add it or not is not confirmed right now.
i feel like the devs are planning on working on this project for quite a while, will be checking on them from times to times,
overall the game seems to have a really huge potential. hopefully they work on it without any pressure and not get burnt out, we've seen a lot of project dropped before, the devs seems to have quite passion for this project because i saw a few comment from the devs saying that they kept revising this project from time to time and pulling out new ideas for future content. hoping for new updates to come in the future!
p.s.
also, about the framerates, i heard from some comments in ci-en that turning off g-sync from nvidia will help sometimes, you should try it.
edits :
some of the most prioritized plan for the devs right now in the next updates,
-reducing trees so that lunar rover travel will be easier to do,
-adding new natives behavior to attack the player in regular basis at the base,
-animals will disappear when the final mission triggers, to ensure natives won't die or get distracted by them,
-red filter will disappear when player is down in the future update,
-future natives camp will be put in flat land rather than high terrain so that they can do most of the sex scene in the future so expect the map to be way bigger than it already is in current update.
(i'll keep editing and updating this reply when new stuff were added, most of these are commenter ideas and the devs replying that they'll think about it. so don't go at me or the devs when in the future the plan is scrapped and not added. they seem to have big ambition and lets hope they don't overwork from it).