Yeah, Agka and Hanyuu pointed out probably the 2 best approaches, depending on what is holding you back.
A few things can be holding you back. If your ability to identify patterns and respond quickly is holding you back, practicing complex chord streams can help you read patterns quicker, because of the higher note density it forces you to be faster at identifying the notes themselves, and this transfers to reading higher BPM streams.
If your ability to simply press the keys is the limiting factor, playing patterns that feel really weird to play will help your fingers become more independent, which helps you be faster, because it now takes less mental effort to hit the key, no mater what the pattern is.
A good way to practice for awkward patterns is playing with random a lot. It also forces you to sight read things, so you have to rely less on knowing what's coming next.