maxima is 100 times slower than maple



Hello, list. I am comparing the speed of execution of maple and maxima 
programs. And maple is 100 times faster then maxima for symbolic 
computation. For example, to run the attached program maxima needs about 
50 seconds on my laptop. To run the same program(of course, syntax of 
program must be accordingly changed) maple needs about 0.5 seconds.
I am using debian stable, maxima is configured to use sbcl, version of 
maxima is 5.27.0
Is there any possibility to speed up maxima?
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