R2022a is much slower than R2021

Running a distinct simulink model in R2021a and then in R2022a, revelas that R2022a is significantly slower than R2021a.

R2021a

Stoptime 10

Data volume: 1.4580e+05 LDPC data

Win Stopwatch: 00:07:56

R2022a

Stoptime 10

Data volume: 1.4580e+05 LDPC data

Win Stopwatch: 00:16:43

The Simulink Model comprises several end-to-end communication links: channel coding+bit mapping+SRRC filter+modulation+AWGN+demodulation+bit demapping+channel decoding.

It seems I have to switch back to R2021a.

What is in R2022a so different than R2021a in terms of performance of execution?

>> ver

MATLAB Version 9.12 (R2022a)

Simulink Version 10.5 (R2022a)

Communications Toolbox Version 7.7 (R2022a)

DSP System Toolbox Version 9.14 (R2022a)

Signal Processing Toolbox Version 9.0 (R2022a)

Answer 1

[Teresa Hubscher-Younger]

You can try a few things like Update Advisor or Performance Advisor, which are tools that catch things that will slow down performance when updating:

https://www.mathworks.com/help/simulink/ug/consult-the-upgrade-advisor.html

https://www.mathworks.com/help/simulink/ug/consult-the-performance-advisor.html

If this doesn't fix things, I would contact Tech Support.

This page has other advice about Speeding Up Simulink, but I think it's not directly addressing upgrades:

https://www.mathworks.com/help/simulink/ug/speed-up-simulation.html

Hope this helps. :)