Not sure how else to explain this but this started happening quite recently I believe after the last update.
I have been noticing my Reactor times increasing very steep. I do not have solid numbers but it just felt like they increased instead of decreased with each new Research that would decrease the timer. For example at T10 Capital Battle was at something like 45 minutes to charge, then after getting the research, they are now sitting at 2.5 hours. Other parts like Synth are at 45 minutes at T10.
I recently started on T13 Synth. Before I started, I was sitting at around 11-12 hours for the next fixture. Woke up this morning after letting it run all night and now fixtures are at 2 days 3 hours despite having maxed out 2 of the lines which give all the fixture speed bonuses.