Probably not. What specific process are you seeing eat up so many cycles?
I might have to clean up some old stuff on the list once I figure out if they are still used but the main ones are Fermentrack related I think. This is what I got:
pi@brewpi:~ $ top
top - 09:40:33 up 10:33, 2 users, load average: 1.95, 2.01, 1.99
Tasks: 179 total, 3 running, 123 sleeping, 0 stopped, 1 zombie
%Cpu(s): 34.7 us, 1.2 sy, 0.0 ni, 64.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 948304 total, 41276 free, 518792 used, 388236 buff/cache
KiB Swap: 102396 total, 92668 free, 9728 used. 351840 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1218 ferment+ 20 0 45676 17296 6876 R 100.0 1.8 607:10.92 circusd
28018 ferment+ 20 0 55900 36764 10008 S 35.3 3.9 0:03.60 python
1237 ferment+ 20 0 47052 21976 9592 S 5.3 2.3 36:28.76 python3
27990 pi 20 0 8224 3388 2836 R 1.0 0.4 0:00.30 top
10 root 20 0 0 0 0 R 0.3 0.0 2:00.34 rcu_sched
463 root 20 0 2896 1748 1580 S 0.3 0.2 0:10.13 connectd.a+
550 root 20 0 2896 1728 1516 S 0.3 0.2 0:13.49 connectd.a+
659 redis 20 0 29692 2948 2172 S 0.3 0.3 1:38.44 redis-serv+
719 root 20 0 2664 1712 1544 S 0.3 0.2 0:17.23 weavedconn+
729 root 20 0 17536 13176 5564 S 0.3 1.4 0:05.23 ddclient -+
912 pi 20 0 143328 25772 18220 S 0.3 2.7 1:50.93 lxpanel
1 root 20 0 28108 5428 4516 S 0.0 0.6 0:06.46 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.07 kthreadd
3 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_gp
4 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_par_gp
8 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 mm_percpu_+
9 root 20 0 0 0 0 S 0.0 0.0 0:03.58 ksoftirqd/0