Too very slow pages on ic 5.10.0

---- (1) -----
after 3 months of installation and light use my old production catalogue 
with:
- interchange 5.10.0
- debian 9
- perl 5.24.1
- mysqld 10.1.26-MariaDB-0+deb9u1
- hypervisor (vmware player 12, 4GB ram 1 cpu 4 cores)
I notice that for the pages with heavy query became very slow and 
sometimes bring to "Gateway Timeout"
"top" utility display cpu to 100% during page wait sometimes for mysql 
and sometimes for interchange

I test the same catalogue in the same pages with the same db on the old 
server:
- interchange 5.6.3
- debian 6
- perl 5.10.1
- mysqld 5.1.73-1-log
- hypervisor (virtualbox 4GB ram 1 cpu)

the pages in the old server are quicker from 4 to 14 times !

---- (2) -----
This now is a serious problem for me and my client and in the attempt to 
quickly solve it I try to install (develop server) interchange 5.6.3 on 
the new server debian 9 but there is a problem on make:

root /usr/local/src/interchange-5.6.3 # make
"/usr/bin/perl" "-Iblib/arch" "-Iblib/lib" relocate.pl scripts/ic_mod_perl
Can't locate scripts/initp.pl in @INC (@INC contains: blib/arch blib/lib 
/etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.24.1 
/usr/local/share/perl/5.24.1 /usr/lib/x86_64-linux-gnu/perl5/5.24 
/usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.24 
/usr/share/perl/5.24 /usr/local/lib/site_perl 
/usr/lib/x86_64-linux-gnu/perl-base) at relocate.pl line 26.
Makefile:898: recipe for target 'scripts/ic_mod_perl' failed
make: *** [scripts/ic_mod_perl] Error 2

Any suggestion ?

-- 
"Fino alla bara sinpara"
"Up to demise we rize"