LOGIC PRO: (some) delayed library instruments

Latency is a general issue of digital processing. You need to understand what is causing latency in general in order to reduce it.

• The lower the I/O buffer size (audio buffer size), the lower the latency of cost of higher cpu load.
• The higher the sample rate, the lower the latency of cost of higher cpu load.
• Every plugin and computation causes latency. Some plugins cause more latency than others. Especially plugins in the field of spectral sound design, analog simulation and pitch can cause high latency.
• Oversampling introduces Latency.
• If Plug-in Latency Compensation is activated, which is and should be the default setting, the latency generated by all plug-ins used in the project is summed up.
• Latency of different sound cards or devices can vary.
• Sometimes flexed audio tracks can cause latency
• Using Low Latency Mode while recording is a big help. It's de-activating some plugins but this can cause changes in sound. Don't forget to switch off Low Latency Mode while playback !
• Freezing tracks with many latency-producing plugins can help to reduce Latency.
• Avoid changing Recording Delay.

Manage input monitoring latency in Logic Pro for Mac - Apple Support

Can you take a picture of your "Region Inspector" and "Track Inspector" for a Software Instrument Track Type (Green)? What is your buffer size set to? This only happens with Midi and not Audio Loops/Tracks right?

Sir,

Can you try this out for me? It should help. It is called "Low Latency Mode".

Have you had a chance to try a feature called “Low Latency Monitoring”? Can you tell me if it works? It is a key command, but you can also find it In the LCD display when you customize it.