Matlab symbolic toolbox much slower than MuPAD I thought it relies on

Question

Basic operations on polynomials seem to be extremely slow in Matlab. See the following code:

syms x y
p = 1 + x + y + x*y
tic
for i=1:10000
coeffs(p);
end
toc
tic
for i=1:10000
q=expand(p*p);
end
toc

On my computer it yields: Elapsed time is 9.021812 seconds. Elapsed time is 31.494963 seconds.

In a MuPAD notebook (type "mupad" in the command window of Matlab) the same thing takes about a second:

p := 1 + x + y + x*y
for i from 1 to 10000 do coeff(p);monomials(p); end_for
for i from 1 to 10000 do q:=expand(p*p); end_for

On the other hand, it seems like MuPAD will be shut down in future versions of Matlab. Here are my questions:

(1) Doesn't the Matlab symbolic toolbox use the MuPAD symbolic engine to do basic polynomial operations?

(2) Why Matlab symbolic toolbox so much slower than MuPAD? If MuPAD is shut down, I think will that I will never use Matlab for my purposes again. I use it for trying to solve polynomial optimization problems using semidefinite programs.