Drop outs occurring. . .

My newest patch is making lots of dropout in the audio playback. Too many operations. I am looking for what operations to reduce, but any help with my situation would be appreciated.

My computer:

Macbook Pro
Processor: 2.6 GHz 6-core Intel Core i7
Graphics: Intel UHD Graphics 1536
Memory:16GB 2400 MHZ DDR4

In Pd 54.1 I have these settings right now, but I would like to reduce the delay at least:

44100k sampling (I would like to go to 48k)
50ms Delay (I would like this to get down to at least 30ms)
64 Block Size

Is there something obvious I need to do? The computer is over five years old.

I am using intensive additive synthesis, delays, reverb units, among other operations.

Help. . . .

@raynovich Could it be repartitioned and distributed among several cores using [pd~]?

@raynovich Too many onscreen GUI updates.... bangs, redrawing arrays etc. could be causing problems for the audio thread.
If you no longer have dropouts when you increase the delay to say 80 msecs or more then you need an external soundcard, as the dropouts occur because the soundcard needs a bigger buffer to be able to process the audio in time.
With a decent external card you should be able to get the delay down to around 3 msecs.
48K should not be a problem...... not sure in OSX, but in windows all audio runs at 48K so 44.1 requires resampling by the OS.
I have a mid 2012 Intel MacBook pro 8 core I7 running windows and can set the delay to 3 msecs using a MOTU. But for shows my whole monitor mix runs on an old Toshiba Z830 I5 with the same delay and soundcard. The computer processor has not been the weak link since around 2000, except that interrupts from e.g. the Wi-Fi card can increase latency, and especially on Macs the trackpad and keyboard are connected by a USB hub, which is not great..... this is worth reading..... https://support.native-instruments.com/hc/en-us/articles/210296445-Mac-Tuning-Tips-for-Audio-Processing
David.

Ah that all makes sense. When I perform the piece or practice it, I use an external sound card, but was just running some operations in the computer. So, I guess I will have to start testing the system with the external soundcard at all times. Thanks for the quick responses.

I have learned to keep as few windows open at one time.