It is not a surprise some bits of a registers of a SOC are read-only. That means you can not change the value of the bits, thus a writing operation won't change the value. However, DStream always check the value and thus make it annoying to do batch update of registers. Here is on way to disabled it in DS-5 script
stop
wait 1s
show architecture
show version
info core
memory 0x00000000A0000000 +0x30000000 nocache noverify nobp nohbp
memory set 0x00000000A0014008 32 0x00404500
memory set 0x00000000A0002000 32 0x00010000
