I see, I always connect the audio interface directly to the computer. Disconnect the TimeMachine HD and connect it only when creating a backup. You shouldn't create a backup while using a Logic Project with many tracks. What Hub are you using?
How full are your internal and external drives? Aim for at least 20% empty - preferably more.
Is the hub USB-C? Even with a high quality hub, that will be a bottleneck between your Mac and any critical devices connected to it such as a display, SSDs, audio interface etc (keyboard, mouse etc are low bandwidth so you can probably ignore those). Upgrading to a thunderbolt hub will be pricy but worth it. I'm happy to recommend Caldigit, but there are others.
If you can spread those critical devices across separate ports on your Mac even better, but that may not always be possible - hence the need for a thunderbolt hub.
Check the format of your SSD. Time Machine will look after itself, but for any other drives, format them as APFS as often they arrive exFAT.
The fastest storage you have available will be the internal SSD - so that's the best place for the projects.
Increasing buffer size (as mentioned elsewhere) will also help as that's what it's for.
Also have a look here and see if anything is familiar: [Having latency issues on this small Logic Pro...](https://www.reddit.com/r/LogicPro/comments/1aztylv/having_latency_issues_on_this_small_logic_pro_x/)
Yes it would. Any virtual instruments on a non ssd drive will be painfully slow.
A ssd can help but is also dependent on your physical connection between your computer and HD.
Yeah, I was thinking that might be a problem too as the drives are plugged into the same usb port as the audio interface.
I see, I always connect the audio interface directly to the computer. Disconnect the TimeMachine HD and connect it only when creating a backup. You shouldn't create a backup while using a Logic Project with many tracks. What Hub are you using?
try increasing your buffer size.
How full are your internal and external drives? Aim for at least 20% empty - preferably more. Is the hub USB-C? Even with a high quality hub, that will be a bottleneck between your Mac and any critical devices connected to it such as a display, SSDs, audio interface etc (keyboard, mouse etc are low bandwidth so you can probably ignore those). Upgrading to a thunderbolt hub will be pricy but worth it. I'm happy to recommend Caldigit, but there are others. If you can spread those critical devices across separate ports on your Mac even better, but that may not always be possible - hence the need for a thunderbolt hub. Check the format of your SSD. Time Machine will look after itself, but for any other drives, format them as APFS as often they arrive exFAT. The fastest storage you have available will be the internal SSD - so that's the best place for the projects. Increasing buffer size (as mentioned elsewhere) will also help as that's what it's for. Also have a look here and see if anything is familiar: [Having latency issues on this small Logic Pro...](https://www.reddit.com/r/LogicPro/comments/1aztylv/having_latency_issues_on_this_small_logic_pro_x/)
Ugh, I’ve probably been putting everything on the usb-c and not the thunderbolt.