Replace new Cable and test on Xfinity router 1.3GB speed with MB8600 100 mb :( my service is 1G

Comcast replace the cable but my internet slow

any ideas?

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Freq. (MHz)	Pwr (dBmV)	SNR (dB)	Corrected	Uncorrected
1	Locked	QAM256	37	651.0	1.3	40.4	11	0
2	Locked	QAM256	10	483.0	0.9	40.9	34	0
3	Locked	QAM256	11	489.0	0.7	40.9	36	0
4	Locked	QAM256	12	495.0	0.8	40.5	34	0
5	Locked	QAM256	13	507.0	0.8	39.5	37	0
6	Locked	QAM256	14	513.0	0.7	40.2	41	0
7	Locked	QAM256	15	519.0	0.5	40.0	31	0
8	Locked	QAM256	16	525.0	0.5	39.7	32	0
9	Locked	QAM256	17	531.0	0.2	40.3	50	0
10	Locked	QAM256	18	537.0	0.3	40.0	47	0
11	Locked	QAM256	19	543.0	0.2	40.3	53	0
12	Locked	QAM256	20	549.0	0.5	40.7	37	0
13	Locked	QAM256	21	555.0	0.4	40.5	29	0
14	Locked	QAM256	22	561.0	0.3	40.3	50	0
15	Locked	QAM256	23	567.0	0.1	40.3	48	0
16	Locked	QAM256	24	573.0	0.2	40.4	56	0
17	Locked	QAM256	25	579.0	0.5	40.5	50	0
18	Locked	QAM256	26	585.0	1.0	39.9	42	0
19	Locked	QAM256	27	591.0	1.5	36.2	46	0
20	Locked	QAM256	28	597.0	1.6	38.4	34	0
21	Locked	QAM256	29	603.0	1.7	40.4	24	0
22	Locked	QAM256	30	609.0	1.7	40.4	24	0
23	Locked	QAM256	31	615.0	1.9	40.6	27	0
24	Locked	QAM256	32	621.0	1.5	40.4	20	0
25	Locked	QAM256	33	627.0	1.4	40.5	19	0
26	Locked	QAM256	34	633.0	1.0	40.1	20	0
27	Locked	QAM256	35	639.0	1.2	40.3	14	0
28	Locked	QAM256	36	645.0	1.4	40.5	15	0
29	Locked	QAM256	38	657.0	1.0	40.3	11	0
30	Locked	QAM256	39	663.0	0.8	40.3	18	0
31	Locked	QAM256	40	669.0	0.9	40.3	7	0
32	Locked	OFDM PLC	41	722.0	1.0	40.0	1622809	0

Upstream Bonded Channels

Channel	Lock Status	Channel Type	Channel ID	Symb. Rate (Ksym/sec)	Freq. (MHz)	Pwr (dBmV)
1	Locked	SC-QAM	1	5120	35.6	51.8
2	Locked	SC-QAM	2	5120	29.2	51.8
3	Locked	SC-QAM	3	5120	22.8	51.0
4	Locked	SC-QAM	4	5120	16.4	50.5
5	Locked	SC-QAM	5	2560	40.4	50.3

Device Information

Cable Specification Version	DOCSIS 3.1
Hardware Version	V1.0
Software Version	8600-19.3.15
Cable Modem MAC Address
Cable Modem Serial Number
CM Certificate	Installed
	Prod_19.3_d31

	Time		Priority		Description
	Time Not Established		Critical (3)		SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:40:36:61:ae:c0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
	Time Not Established		Warning (5)		Lost MDD Timeout;CM-MAC=00:40:36:61:ae:c0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
	Time Not Established		Critical (3)		SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:40:36:61:ae:c0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
	Time Not Established		Critical (3)		No Ranging Response received - T3 time-out;CM-MAC=00:40:36:61:ae:c0;CMTS-MAC=00:01:5c:72:30:88;CM-QOS=1.1;CM-VER=3.1;
	Time Not Established		Notice (6)		Honoring MDD; IP provisioning mode = IPv6
	16:29:50 Fri Dec 4 2020		Notice (6)		DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=00:40:36:61:ae:c0;CMTS-MAC=00:01:5c:72:30:88;CM-QOS=1.1;CM-VER=3.1;

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